Love the game so far, it's a little clunky on my steam deck but I've been playing for days. I'd like to toss in a few ideas, grain of salt stuff take or leave.
An endless hucow mode would be perfect for this game. Once you go feral your name changes to just Cow. Too stupid to make tools or fish but still able to forage and roam. A leveling system would be great. The island magic isn't only seeking to corrupt your mind but also your body. Gestation time getting shorter each pregnancy, bigger breasts and wider thicker hips developing more towards child birth/rearing, so that the end result is more towards an atypical hucow. Not overblown ridiculous levels but maybe start at a gestation of 185 days and fully leveled down to 90 days. Chances of birthing multiple children rising as you settle more into being a feral cow. Children age up faster too due to island magic. If you birth a male in the wild they grow to be roamers, and you run a real risk of being attacked by your own progeny. Females in the wild may get captured, or could end up crocodile bait. Males and females born in the Guardian camp could grow up and end up taking care of their sacred feral mother, remarking on how many she has birthed. That way players can even start the game in an endless cow mode. Maybe you didn't wash up with friends, maybe you got unlucky and washed up with a group of roamers who break your mind immediately as they pass you around or right into Guardian hands who start you in the cage with a roamer. Maybe even a slow corruption story of a young female guardian birthed by the original PC character who watches all the breeding and starts getting ideas/desires of her own, following in the feral path of her mother. Starts with watching breeding pairs more intensely, then experimenting on subdued bulls, then one night throwing caution to the wind and locking herself in the cage with a bull. The guardians awake to find a calm bull and a newly bred cow face down ass up spurting cum and moaning unintelligently. Another bound for the herd. Game+ mode is simply playing through again as one of the children, so in theory you could keep playing on forever. Possibly a lineage tab so you can see how many generations you've played through. So many story ideas and scenes, this game is the perfect backdrop.
Like I said great game, a ton of potential and it really fits a niche that isn't explored much, more often than not abandoned here part way through. Well done dev!